convener:Eiichi Sato(Meteorological Research Institute), Yujiro Suzuki(Earthquake Research Institute, The University of Tokyo), Fukashi Maeno(Earthquake Research Institute, University of Tokyo), Takeshi Maesaka(National Research Institute for Earth Science and Disaster Prevention), Chairperson:Eiichi Sato(Meteorological Research Institute)

convener:Eiichi Sato(Meteorological Research Institute), Yujiro Suzuki(Earthquake Research Institute, The University of Tokyo), Fukashi Maeno(Earthquake Research Institute, University of Tokyo), Takeshi Maesaka(National Research Institute for Earth Science and Disaster Prevention)

convener:Yukio Himiyama(Emeritus Professor, Hokkaido University of Education), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Makoto Taniguchi(Research Institute for Humanity and Nature), Fumiko KASUGA(National Institute for Environmental Studies), Chairperson:yukio himiyama(Emeritus Professor, Hokkaido University of Education), Chairperson:makoto taniguchi(Research Institute for Humanity and Nature)

convener:Yukio Himiyama(Emeritus Professor, Hokkaido University of Education), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Makoto Taniguchi(Research Institute for Humanity and Nature), Fumiko KASUGA(National Institute for Environmental Studies), Chairperson:yukio himiyama(Emeritus Professor, Hokkaido University of Education), Chairperson:makoto taniguchi(Research Institute for Humanity and Nature)

convener:Yukio Himiyama(Emeritus Professor, Hokkaido University of Education), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Makoto Taniguchi(Research Institute for Humanity and Nature), Fumiko KASUGA(National Institute for Environmental Studies)